package cn.itcast.order.service;

import cn.itcast.order.mapper.OrderMapper;
import cn.itcast.order.pojo.Order;
import cn.itcast.order.pojo.User;
import com.alibaba.fastjson.JSON;
import com.netflix.hystrix.contrib.javanica.annotation.DefaultProperties;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.web.client.RestTemplate;

@Service
@DefaultProperties(defaultFallback="allMethodFallBack")
public class OrderService {

    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private RestTemplate restTemplate;


//    @HystrixCommand(fallbackMethod ="queryOrderByIdFallBack" )
    @HystrixCommand
    public String queryOrderById(Long orderId) {
        // 1.查询订单
        Order order = orderMapper.findById(orderId);
//        2、根据用户id去远程查询用户信息   硬编码
//        User user = restTemplate.getForObject("http://localhost:8081/user/" + order.getUserId(), User.class);
        User user = restTemplate.getForObject("http://userservice/user/" + order.getUserId(), User.class);
//      3、把用户信息set到Order中
        order.setUser(user);
        // 4.返回
        return JSON.toJSONString(order);
    }

    public String queryOrderByIdFallBack(Long orderId) {
        return "服务器太忙，请稍后重试.....";
    }

    //    全局降级方法
    public String allMethodFallBack() {
        return "前方施工请稍后在试.....";
    }
}
